Is it possible to send a PunchOut Order Message directly in cXML format to some URL or is it a must to have it wrapped in a HTML FORM?

Hi friends,

I have following situation: We create a cXML PunchOut Order Message and need to send it to Ariba. Following the process, this already contains products selected by the customer and get's validated successfully to DTD.

I know it is possible to wrap the cXML message to a HTML form parameters cxml-urlencoded od cXML-base64.

My question is - is this the only way how the POOM message can get processed? Isn't there some "server-side" "backend" processing possible? I mena, sending cXML as a XML directly to some URL?

Or is this HTML wrapping always necessary and only supported?

Thanks,

Peter